This is a small electric generator that may be attached to a bike or any turning tire to produce electricity. The amount of electricity depends on the speed of turning. It is rated as 6 Volt and 3 Watts.

Bicycle generator with metal mount is a standard size electric generator mountable to the back wheel or front wheel of bicycles. It can also be used to generate electricity in high speed home-made water mills or windmills.

Constructing a wooden electric generator is one of the best ways to learn the principles of electric generators. Completed kit is about 4 inches long and 2 inches wide. The wood dowel axle is about 4 inches long.